REST API create request response

Is there a way to define what root level objects are populated once an entity is created?
In the documentation for entity service api, the following is stated for create request-

fields Attributes to return String[]
populate Relations, components and dynamic zones to populate PopulateParameter
data Input data Object


But no examples are given on how to return specific objects at different levels. For other requests, these examples are clearly defined. I want to retrieve components and a single relation.

System Information
  • Strapi Version: 4.3.3
  • Operating System: Mac Os 12.5
  • Database: Postgres 13
  • Node Version: v14.15.5
  • NPM Version: 6.14.11
  • Yarn Version: 1.22.18